

MCQOPTIONS
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1. |
For which of the following function is : \[\frac{f-f}{a-b}\] Constant for all number a and b where \[a\ne b\]? |
A. | \[f(x)=4x+7\] |
B. | \[f(x)=x+{{x}^{2}}\] |
C. | \[f(x)=\cos x\] |
D. | \[f(x)={{\log }_{e}}x\] |
Answer» B. \[f(x)=x+{{x}^{2}}\] | |